CN212247672U

CN212247672U - Assembled ballastless track convenient to adjust

Info

Publication number: CN212247672U
Application number: CN202020714282.2U
Authority: CN
Inventors: 苏乾坤; 姚力; 庞玲; 江万红; 刘大园; 卢野; 邓希; 巫江; 杜华杨; 柏云; 王育恒; 翟淼; 孙超杰
Original assignee: China Railway Eryuan Engineering Group Co Ltd CREEC
Current assignee: China Railway Eryuan Engineering Group Co Ltd CREEC
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2020-12-29
Anticipated expiration: 2030-04-30

Abstract

The utility model relates to the field of rail transit, in particular to an assembled ballastless track convenient to adjust, which comprises a concrete foundation, an adjusting block and a sleeper block, wherein the adjusting block is used for adjusting the height of the sleeper block, the sleeper block is used for supporting a steel rail, and the adjusting block and the sleeper block are sequentially arranged on the concrete foundation from bottom to top; the concrete sleeper adjusting device further comprises an anchoring device, and the anchoring device is used for fixedly connecting the sleeper blocks and the adjusting blocks with the concrete foundation. The utility model discloses well adjusting block is used for bed hedgehopping sleeper piece, can make the sleeper piece be convenient for extract on the one hand, and on the other hand selects different thickness, material through the adjusting block of changing under the sleeper piece, can realize track structure's altitude mixture control and rigidity optimization to solve the not enough problem of current ballastless track adjustment ability.

Description

Assembled ballastless track convenient to adjust

Technical Field

The utility model relates to a rail transit field, especially an assembled ballastless track convenient to adjustment.

Background

For a long time, the poor adjusting capability of the ballastless track for coping with the large deformation of the foundation is a great problem in the field of track traffic. The service state of the existing ballastless track of the high-speed railway shows that in geological complex sections such as water-rich gravel or stratum movable fracture zones, the foundation under a track line, such as a roadbed, a tunnel, a bridge and the like, has a large risk of arching or sinking deformation, the ballastless track can be disturbed and deformed along with the foundation under the track line, the geometric state of the track structure cannot be maintained at a normal position, the smoothness of the track line is poor easily, a train is forced to slow down and pass, and the potential safety hazard is large.

The adjusting capability of the conventional ballastless track is mainly realized through a fastener, but the adjusting capability of the fastener is limited. For example, WJ-8 type fasteners are commonly used for high-speed rails in China, and the vertical adjustment capacity is 30 mm. Once the adjustment capability of the fastener cannot adapt to the deformation of the foundation under the track, the height of the track structure is generally adjusted by lifting the steel rail on the sleeper block or breaking the rail, replacing the foundation under the track filling line again, or only replacing the track filling bed plate or the track plate. The method is time-consuming, labor-consuming, high in investment cost, and indefinite in maintenance time, and normal operation of the train is influenced. In the long run, the subsurface foundation of the track still has the risk of deformation due to geological complexity.

Therefore, in order to enhance the adaptability of the ballastless track to the deformation of the foundation under the line, a ballastless track structure is needed to be invented, the ballastless track structure can be quickly assembled and is convenient to maintain and adjust so as to quickly adapt to the deformation of the foundation under the line, and the track structure has the advantages of strong integrity, good durability and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: aiming at the problem that the self-adaptive capacity of the track structure in the prior art is poor, the track structure needs to be adjusted by a fastener to adapt to the vertical deformation of an off-line foundation, and the adjustment capacity of the fastener is limited; or through the way of breaking the track, replacing the foundation under the filling line again, or only replacing the road filling bed plate or the track plate to adapt to the deformation of the foundation under the line, the problems of time and labor waste in construction and high input cost are solved, and the assembled ballastless track convenient to adjust can be quickly reassembled and adjusted according to the self parts of the track structure to adapt to the deformation of the foundation under the line.

In order to realize the purpose, the utility model discloses a technical scheme be:

an assembled ballastless track convenient to adjust comprises a concrete foundation, an adjusting block and a sleeper block, wherein the adjusting block is used for adjusting the height of the sleeper block, the sleeper block is used for supporting a steel rail, and the adjusting block and the sleeper block are sequentially arranged on the concrete foundation from bottom to top; the concrete sleeper adjusting device further comprises an anchoring device, and the anchoring device is used for fixedly connecting the sleeper blocks and the adjusting blocks with the concrete foundation. Wherein, the concrete foundation refers to a track bed plate of cast-in-place concrete or a track plate prefabricated in a factory.

The adjusting block is used for heightening the sleeper block, so that the sleeper block can be conveniently pulled out, and the height adjustment and rigidity optimization of the track structure can be realized by replacing the adjusting block below the sleeper block and selecting different thicknesses and materials so as to solve the problem of insufficient adjusting capability of the conventional ballastless track. The anchoring device fixes the sleeper blocks, prevents the sleeper blocks from being pulled up due to train vibration, and enables the track structure to be stable in the vertical direction. The track component can be prefabricated in a factory, the investment cost is low, the deformation is adapted through quick on-site disassembly and assembly, and the construction is time-saving and labor-saving.

As the preferred scheme of the utility model, the top surface of the concrete foundation is provided with a groove which is used for detachably placing the adjusting block and the sleeper block and positioning the adjusting block and the sleeper block; when the train runs, the resistance force in the transverse or longitudinal direction is provided to a certain extent, so that the track structure is not easy to shift.

As the utility model discloses an optimal scheme, the recess link up with concrete foundation's lateral wall, do benefit to sleeper block and adjusting block and can transversely take out from concrete foundation side, need not rail or disconnected rail on the jacking sleeper block, easy to assemble, dismantlement.

Further, as the utility model discloses a preferred scheme, the utility model discloses still include connecting device, connecting device is used for the horizontal anchor of two sleeper blocks with relative setting, increases track structure's lateral stability.

Further, as the preferred scheme of the utility model, the connecting device comprises a first nut and a connecting rod with a thread at the end part, and the connecting rod is matched with the first nut; the lateral surface of the sleeper block is provided with a first transverse through hole, the concrete foundation is provided with a second transverse through hole, the axial center positions of the first transverse through hole and the second transverse through hole correspond, and the connecting rod penetrates through the first transverse through hole and the second transverse through hole and is fixedly connected with the two ends of the connecting rod through nuts.

As the utility model discloses a preferred scheme, sleeper block and adjusting block all are equipped with a plurality of anchor passageway, and the anchor passageway on the sleeper block corresponds with the anchor passageway position on the adjusting block, and the anchor passageway is used for supplying anchor device to pass.

As the preferred scheme of the utility model, the anchoring device comprises a first detachable anchoring bolt; the concrete foundation is provided with a plurality of anchoring holes, threaded sleeves are arranged in the anchoring holes and correspond to the anchoring channels in position, and the threaded sleeves are used for being connected with the anchoring bolts in a matched mode.

Optionally, as the utility model discloses a preferred scheme, anchor device includes pre-buried anchor bolt two on concrete foundation, and anchor bolt is used for passing the anchor passageway, fixes with nut two on the sleeper block surface.

As the utility model discloses an optimal scheme, the installation lower surface of adjusting block is equipped with the bead, is equipped with the draw-in groove on the concrete foundation, and the bead corresponds, shape adaptation with the mounted position of draw-in groove. When the adjusting block is installed, the adjusting block is not easy to slide, the adjusting block is prevented from transversely jumping out, and the positioning time is saved.

As the preferred proposal of the utility model, a cushion layer is arranged on the side wall of the groove. The cushion layer should have sufficient strength not to be easily compressed and deformed. The cushion layer plays a role in buffering, and the sleeper blocks and/or the adjusting blocks are prevented from being in direct contact with the concrete foundation and stressed.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses a change the adjusting block, select the adjusting block of suitable thickness and rigidity, realize track structure's altitude mixture control and rigidity optimization to solve the problem that current ballastless track adjustment ability is not enough, the ability that the basis warp under the self-adaptation line is strong.

2. The utility model discloses a set up anchor fixed with the sleeper piece, prevent that the sleeper piece from pulling out on because of the train vibration, strengthened track structure's vertical stability.

3. The utility model discloses a set up anchor fixed with the sleeper block, the utility model discloses a relative sleeper block horizontal anchor that sets up on the connecting device is with the track circuit, and set up the bead with the draw-in groove adaptation on the concrete basis on the adjustment block, increased track structure's lateral stability.

4. In case the foundation warp under construction adjustment track structure is with the adaptation line, utilizes the utility model discloses, after loosening anchor and connecting device, only need take out the sleeper block from concrete foundation side, need not rail or disconnected rail on the jacking sleeper block.

5. The track component of the utility model can be prefabricated in factory and assembled on site, and the investment cost is low; the quick disassembly, assembly and adjustment can be realized quickly, and the construction is time-saving and labor-saving; the self-part of the track structure is adapted to the deformation of the foundation under the line, and the track structure is strong in structural integrity, good in self-adaptive capacity and durable.

Drawings

Fig. 1 is a schematic elevation view of a ballastless track structure in embodiment 1.

Fig. 2 is a schematic elevation view of the concrete foundation structure of fig. 1.

Fig. 3 is a schematic view of the structure of the connecting device.

Fig. 4 is a schematic plan view of a ballastless track structure.

FIG. 5 is a schematic plan view of the conditioning block.

Fig. 6 is a schematic structural view of the anchoring device in embodiment 1.

Fig. 7 is a schematic elevation view of a ballastless track structure in embodiment 2.

Fig. 8 is a schematic view showing the structure of the part a enlarged anchor device in fig. 7.

Icon: 1-sleeper blocks; 101-rail bearing pedestal; 102-a first lateral through hole; 2-anchoring means; 201A-anchor bolt one; 201B-anchor bolt two; 202-anchor washer; 3-adjusting the block; 301-ribs; 4-a connecting means; 401-nut one; 402-a gasket; 403-a connecting rod; 5-cushion coat; 6-anchoring a channel; 7-concrete foundation; 701-grooves; 702-a threaded sleeve; 703-a second lateral via; 704-card slot.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Example 1

An assembled ballastless track convenient to adjust is shown in figures 1 and 2 and comprises a concrete foundation 7 with a groove 701 on the top surface, wherein an adjusting block 3 and a sleeper block 1 are sequentially arranged in the groove 701 from bottom to top, the sleeper block 1 comprises a rail bearing pedestal 101, and the rail bearing pedestal 101 is positioned at the top of the sleeper block 1 and is used for supporting a steel rail and connecting a fastener system; the sleeper block adjusting device further comprises an anchoring device 2, and the anchoring device 2 is used for fixedly connecting the sleeper block 1 and the adjusting block 3 with a concrete foundation 7. The sleeper block 1 and the adjusting block 3 can be selected from high polymer materials, fiber materials or solid or cavity structures made of steel or concrete. Wherein, the concrete foundation 7 is a cast-in-situ track bed plate or a prefabricated track plate.

The adjusting blocks 3 are used for heightening the sleeper block 1, so that the sleeper block 1 can be conveniently pulled out, and the height adjustment and rigidity optimization of a track structure can be realized by replacing the adjusting blocks 3 under the sleeper block 1 and selecting different thicknesses and materials so as to solve the problem of insufficient adjusting capability of the conventional ballastless track. The anchor device 2 fixes the sleeper block 1, prevents the sleeper block 1 from being pulled up due to the vibration of the train, and enables the track structure to be stable in the vertical direction. The rail parts can be prefabricated in factories and assembled on site, and can be quickly disassembled, assembled and adjusted. The configuration of the grooves 701 in the concrete foundation 7 provides resistance in the lateral or longitudinal direction to a certain extent, making the track structure less prone to shifting.

Specifically, as shown in fig. 2, the groove 701 on the concrete foundation 7 is through with the side wall of the concrete foundation 7, the side surface of the anchoring washer 202 is flush with the side surface of the track bed, and the sleeper block 1 and the adjusting block 3 arranged in the groove 701 can be transversely taken out from the side surface of the concrete foundation 7 without lifting the steel rail or broken rail on the sleeper block 1, so that the installation and the disassembly are convenient.

Further, as shown in fig. 1 and 3, in order to increase the lateral stability of the sleeper block 1, two sleeper blocks 1 disposed opposite each other are anchored laterally by a connecting device 4. Wherein, connecting device 4 includes nut one 401, gasket 402 and connecting rod 403 of high strength, and the end of connecting rod 403 is threaded, and is the adaptation with nut one 401. As shown in fig. 1, the lateral surface of the sleeper block 1 is provided with a first transverse through hole 102, the concrete foundation 7 is provided with a second transverse through hole 703, the axial center positions of the first transverse through hole 102 and the second transverse through hole 703 correspond, and the first transverse through hole 102 and the second transverse through hole 703 are used for the connecting rod 403 to pass through. When the sleeper block fixing device is installed, the connecting rod 403 sequentially penetrates through the first transverse through hole 102 of the first sleeper block 1, the second transverse through hole 703 of the concrete foundation 7 and the first transverse through hole 102 of the second sleeper block 1 from the side face of a track bed, and then the two ends of the connecting rod 403 are anchored with the upper gasket 402 and the first nut 401 so as to transversely anchor the two sleeper blocks 1.

Further, as shown in fig. 1, 4 and 5, the sleeper block 1 and the adjusting block 3 are provided with a plurality of anchoring channels 6. The sleeper block 1 is provided with a plurality of first anchoring channels 6, the adjusting block 3 is provided with a plurality of second anchoring channels 6, the first anchoring channels 6 correspond to the second anchoring channels 6 in position, and the anchoring channels 6 are used for the anchoring devices 2 to penetrate through.

Alternatively, as shown in fig. 1 and 6, the anchoring device 2 comprises an anchoring washer 202 and an anchoring bolt 201A, wherein the anchoring bolt 201A is detachable from the concrete foundation 7. Correspondingly, the concrete foundation 7 is provided with a plurality of anchoring holes, threaded sleeves 702 are arranged in the anchoring holes, the threaded sleeves 702 correspond to the second anchoring channels 6 and the first anchoring channels 6 in position, and the threaded sleeves 702 are used for being in adaptive connection with the first anchoring bolts 201A. During installation, the first anchor bolt 201A sequentially penetrates through the anchor washer 202, the first anchor channel 6 and the second anchor channel 6 and is screwed into the threaded sleeve 702 embedded in the concrete foundation 7, and the sleeper block 1 and the adjusting block 3 are tightly fastened on the concrete foundation 7.

As shown in fig. 1 and 5, a convex rib 301 is arranged on the lower mounting surface of the adjusting block 3, a slot 704 is arranged on the groove 701 of the concrete foundation 7, and the convex rib 301 corresponds to the slot 704 in mounting position and is matched in shape. When the adjusting block 3 is installed, the adjusting block is not easy to slide, the adjusting block 3 is prevented from transversely jumping out, and the positioning time is saved.

As shown in fig. 1 and 4, a cushion layer 5 is provided on the sidewall of the groove 701. The cushion 5 should have sufficient strength not to be easily compressed and deformed. The cushion layer 5 plays a role in buffering, and prevents the sleeper blocks 1 and/or the adjusting blocks 3 from being in direct contact with the concrete foundation 7 to bear force.

When the ballastless track foundation is greatly deformed, the anchoring device 2 and the connecting device 4 are loosened, the sleeper blocks 1 in the grooves 701 are taken out from the side face of the concrete foundation 7, a steel rail or a broken rail above the sleeper blocks 1 does not need to be jacked, the adjusting blocks 3 are replaced according to the requirement of the actual on-site adjustment amount, and finally the adjustment is carried out again, so that the adjustment of the height and the rigidity of the track structure is realized.

Example 2

In contrast to embodiment 1, this embodiment differs in the connection structure of the anchoring device 2 to the concrete foundation 7, as shown in fig. 7 and 8. The concrete points are as follows: the anchoring device 2 comprises a second nut, an anchoring washer 202 and a second anchoring bolt 201B, wherein the second anchoring bolt 201B is pre-embedded on the concrete foundation 7 and can be an inverted T-shaped bolt or an L-shaped bolt or only a bolt column with threads. During installation, the second embedded anchor bolt 201B sequentially penetrates through the second anchor channel 6 and the first anchor channel 6, then the second embedded anchor bolt is applied with the anchor gasket 202, and the second embedded anchor bolt is fixed by the second nut to tightly press the sleeper block 1 and the adjusting block 3 on the concrete foundation 7.

It should be noted that the "transverse" direction mentioned above refers to a direction perpendicular to the running direction of the train.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The assembled ballastless track convenient to adjust is characterized by comprising a concrete foundation (7), an adjusting block (3) and a sleeper block (1), wherein the adjusting block (3) is used for adjusting the height of the sleeper block (1), and the adjusting block (3) and the sleeper block (1) are sequentially arranged on the concrete foundation (7) from bottom to top; the track sleeper block (1) and the adjusting block (3) are fixedly connected with the concrete foundation (7) through the anchoring device (2).

2. The assembled ballastless track convenient for adjustment according to claim 1, wherein the top surface of the concrete foundation (7) is provided with a groove (701), and the groove (701) is used for detachably placing the adjusting block (3) and the sleeper block (1).

3. The ballastless track of claim 2, wherein the groove (701) is formed through a side wall of the concrete foundation (7).

4. An adjustable assembled ballastless track according to claim 3, further comprising a connecting device (4), wherein the connecting device (4) is used for transversely anchoring two oppositely arranged sleeper blocks (1).

5. The assembled ballastless track convenient for adjustment according to claim 4, wherein the connecting device (4) comprises a first nut (401) and a connecting rod (403) with screw thread at the end, the connecting rod (403) is adapted to the first nut (401); the lateral surface of the sleeper block (1) is provided with a first transverse through hole (102), the concrete foundation (7) is provided with a second transverse through hole (703), the axial center positions of the first transverse through hole (102) and the second transverse through hole (703) correspond to each other, the connecting rod (403) penetrates through the first transverse through hole (102) and the second transverse through hole (703), and the two ends of the connecting rod (403) are fixedly connected through the first nuts (401).

6. The assembled ballastless track convenient for adjustment according to claim 2, wherein the sleeper block (1) and the adjustment block (3) are provided with a plurality of anchoring channels (6), the anchoring channels (6) on the sleeper block (1) correspond to the anchoring channels (6) on the adjustment block (3), and the anchoring channels (6) are used for the anchoring device (2) to pass through.

7. The assembled ballastless track of claim 6, wherein the anchor device (2) comprises a first detachable anchor bolt (201A); the concrete foundation (7) is provided with a plurality of anchoring holes, threaded sleeves (702) are arranged in the anchoring holes, the threaded sleeves (702) correspond to the anchoring channels (6) in position, and the threaded sleeves (702) are used for being connected with the first anchoring bolts (201A) in an adaptive mode.

8. The assembled ballastless track convenient for adjustment according to claim 6, wherein the anchoring device (2) comprises a second anchoring bolt (201B) pre-embedded on the concrete foundation (7), the second anchoring bolt (201B) is used for passing through the anchoring channel (6), and a second nut is fixed on the surface of the sleeper block (1).

9. An adjustable assembled ballastless track according to any one of claims 2 to 8, further comprising a cushion layer (5), wherein the cushion layer (5) is provided on the side wall of the groove (701).

10. The assembled ballastless track convenient for adjustment according to any one of claims 1-8, wherein the lower mounting surface of the adjustment block (3) is provided with a convex rib (301), the concrete foundation (7) is provided with a clamping groove (704), and the convex rib (301) corresponds to the mounting position of the clamping groove (704) and is matched with the clamping groove in shape.